UVA549 Evaluating an Equations Board

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=7&page=show_problem&problem=490 [PDF](https://uva.onlinejudge.org/external/5/p549.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA549/13b5b6d510af9a1805e65d742b01ad1f72c716bb.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA549/3d4a2e09a7522cb616585b10fc93d4232af885cd.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA549/b7a6ae838f86ec5a5a3cf842d87a4c5c9a00a858.png)